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Fractal analysis of extracellular matrix for observer-independent quantification of intestinal fibrosis in Crohn’s disease
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Fractal analysis of extracellular matrix for observer-independent quantification of intestinal fibrosis in Crohn’s disease
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Journal Article
Fractal analysis of extracellular matrix for observer-independent quantification of intestinal fibrosis in Crohn’s disease
2024
Overview
Prevention of intestinal fibrosis remains an unresolved problem in the treatment of Crohn’s disease (CD), as specific antifibrotic therapies are not yet available. Appropriate analysis of fibrosis severity is essential for assessing the therapeutic efficacy of potential antifibrotic drugs. The aim of this study was to develop an observer-independent method to quantify intestinal fibrosis in surgical specimens from patients with CD using structural analysis of the extracellular matrix (ECM). We performed fractal analysis in fibrotic and control histological sections of patients with surgery for CD (n = 28). To specifically assess the structure of the collagen matrix, polarized light microscopy was used. A score to quantify collagen fiber alignment and the color of the polarized light was established. Fractal dimension as a measure for the structural complexity correlated significantly with the histological fibrosis score whereas lacunarity as a measure for the compactness of the ECM showed a negative correlation. Polarized light microscopy to visualize the collagen network underlined the structural changes in the ECM network in advanced fibrosis. In conclusion, observer-independent quantification of the structural complexity of the ECM by fractal analysis is a suitable method to quantify the degree of intestinal fibrosis in histological samples from patients with CD.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
